Hi Richard,
Glad to hear you’re hooked! 🙂 We have the basic concepts and a few introduction lessons right here: http://uswindsurfing.org/introduction-course/, and we’re working on updating the material. Where in the country are you? Don’t hesitate to reach out to your local director (http://uswindsurfing.org/contact/)! He or she will be thrilled to point you in the right direction, introduce you to other windsurfers in your area, invite you to local events, etc.